Machine for sewing loops onto cards.



W. G. DIEPENBAGH.

MACHINE FOR SEWING LOOPS ONTO CARDS.

APPLICATION FILED APB.15,1911.

- Patented Dec. 22, 1914 13 SHEETS-311E137 l.

3 wue w toz W. O. DIEPENBAOH.

MACHINE FOR SEWING LOOPS ONTO CARDS.

APPLICATION FILED APRJS, 1911,

Patented De0.22,1914.

QLQQQ l3 $HEETS-SHE r 5 Wue wtoz M w m 2 W. 0. DIEPENBAOH. MACHINE FOR SEWING LOOPS ONTO CARDS.

APPLICATION FILED APR. 15, 1911.

PatentedDac. 22, 1914.

LEQLQOZQ 13 SXEETS-SHEET 3.

i 1 ii A S 5% W. U. DIEFENBAGH.

MACHINE FOB. SEWING LOOPS ONTO CARDS. APPLIOATION FILED APB.15, 1911 1,121,902, Patented Dec. 22, 1914.

13 SHEETS-SHEET 4.

Q/vi/bwwwo f I S/WUQ M/Lo c V0 Ed 17 mm @M TEACH WQ 6. MAG-ENE FORJSBWING Loom ONTO CARDS,

' AIPPLIOATIDN FILED APR,15, 19-11:. m 21,992

"Pateitei 1930.223

W. DIEFENBAOHI MACHINE FOP SEVUNG'LQD PS OETO APPLICATION FILED APRJ'lS, 1911.

' Patented Dec. 22, 1914;

- F-azzma W. O. DIEFENBAGH.

MACHINE FOR SEWING LOOPS ONTO CARDS.

APPLfGATION FILED APR.15, 1911.

'Patemea Dec. 22,1914.

13 SHEETS-SHEET9.

W. O. DIEFENBAGH.

MACHINE FOR SEWING LOOPS ONTO CARDS. APPLICATION FILED APR.15, 1911 Patented Dec. 22, 1914:.

13 SHEETS-SHEET 10.

w. 0, DI BPENBAOH. MACHINE FOR SEWING LGOPS ONTO CARDS.

' APPLICATION FILED APE.15, 1911 1,121,902. Patented Dec.22,1914.

13 SHEETS-SHEET ll.

7&0 W. I b wvewfo c W. C. DIEFENBAGH. MACHINE FOR SEWING LOOPS ONTO CARDS.

APPLICATION FILED 111 3115, 1911.

1, 1 21,902. Patented Dec 22, 1914.

. 13 SHEETS-SHEET 12.

F9 7/4 fi 33,

v V W. G. DIEFENBAGH'. MACHINE PQHSEWINGLOOPS ONTO CARDS.

APPLICATION FILED APRJS, 191,1 w

' Patented Dec. 22, 1914.-

UNITED STATES PATENT OFFICE.

WILLIAM C. DIEFENBACH, OF SHELTON; CONNECTICUT, ASSIGNOR T0 CONNECTICUT HOOK AND EYE COMPANY, OF WATERBURY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

Specification 0! Letters Patent.

Patented Dec. 22, 1914..

Application filed April 15, 1911. Serial No. 621,259.

To all whom it may concern: v

Be it known that I, \VILLIAM C. DIEFEN- nwcn, a citizen of the United States, and residing at Shelton, county of Fairfield, State of Connecticut, have invented certain new and useful, Improvements in Machines for Sewing Loops onto Cards, of which the following is a full and clear specification, illustrated in the accompanying drawings, the novel features of the invention being more fully pointed out in the annexed claims.

My invention relates in general to machines for sewing articles onto cards, which are sold in quantities such as for instance one or two dozen on one card and in particular to a machine by means of which socalled loops are sewed onto cards in suitable quantities as demanded by the trade.

The object of the invention is to obtain a. reliablefeeding of loops in a predetermined position from the bulk and to positively feed the loops thus supplied singly *into sewing position to be sewed onto the cards. In the accompanying drawings 1 have illustrated howmy invention may be reduced to practice.

In these drawings Figure 1 is a front elevation. of the machine in its entirety ona reduced scale. Fig. 2 is an enlarged front felevation of a machine with the loop hopper removed showing the parts in their mutual relation to each other. Fig. 3 is-a plan view of the complete machine with the "needle bar standard removed for clearness.

Fig. 4 is a vertical section on the line A-A Fig. looking to the left. and shows-particularly the card feeding means, the needle bar standard and the means for controlling the driving of? the loop hopper. Fig. 5 is a side elevation of the machine looking to the right in Fig. iwith the hopper controlling pulleys removed. 7 view partly in section on the line E-E. Fig. 5. showinghow the needle bar and needle liar bhick are oscillated. Fig. 7 is a detail view ot a spring foot which is em- 4 ploved to hold the. card against the bed while the needle is being withdrawn after the stitches are made. Fig. 8 1s a vertical section on the line B-B Fig. 2 looking to the loft. showing the means for operating the loop feeder. F 1g. 9 is a vertical section on the'line (-(l Fig. 8, seen from the left.

Fig. 6 is a detail plan Fig. 1( is a horizontal section on the line D- D in'Fig. '8, showing the means for adusting the feeding pawl. Fig. 11 is a dc tail view of'the block used on the detent spring shown in Fig. '3 for retaining the feed wheel in position. Fig. .2 is a plan view in detail of the lower end er the chute showing a loop in position t be-carried forward by the feeder foot to sewing position. Fig; 13 is a similar View but showt'oot has carried the loop forw'ar to sewing'position. Fig. 14: is a. detail plan view of the lower end of the loop chute with the feeder footremoved. Fig. 15 is a detail view of the lower end or the loop chute of the needle bar and the feeder foot showing the feeder foot after it has seized the loop on the feed line and about to carry it for ward to sewing position. Fig. 16 is a similar view to Fig. 12 but showing the feeder foot after it has carried the loop-for=rard to sewing position and also showing it in dotted position after the needles have passed through the sewing eyes of the loop. Fig. 117 is a plan viewin detail showing how the feednvhe'el operates the lever for moving the feed foot to and from sewing position. Fig. 18 is a bottom view of the rocker member carrying the feed foot. Fig. 19 is a longitudinal vertical section of the sameshow 5 1g how the feed foot is adiustably mounted .tion to be seized by the feeder foot. Fig.

91 is a side elevation of the same and looking to the rightin Fig. 20, showing the parts in elevated position and the. pusher finger about to descend back of the hump of loop. Fig. is a similar view to Fig. 21 but showing the parts in lowered position after the pusher finger has moved a --loop down the chute. Fig. 23 is a section on thc'line F--F in Fig. 20. seenin the direction of the arrow. Fig. Qiis a detail plan view ofa pusher finger. Fig. 25 is a plan view of the loop feeding hopper and a 'portion of the upper end of the chute showing how the loops are discharged from the hopper and dropped down said chute. Fig. 26 is a plan View of the stationary portion or base plate of the hopper. Fig. 27 is an enlarged detail section of said base plate a n a mg the positions of parts after the feeder 33 is a vertical section view of the hopper to the right,

Fig. 31 is a vertical section of the loophopper on the line w-zc Fig.25. Fig. 32 is a detail inside view of the side wall of the rotatable member of the loop hopper. F 1g.

similar to Fig. 31 but of a modified'form of the same. Fi 34 is a plan view of the inside surface of the base of the hopper, shown in Fig. 33. Fig. is a plan view of a device for applying paste to the sewing threads after the loops have been sewed to the cards. Fig. 36 is a section-of the same on the line LL, Fig. 35. Fig. 37 is a' vertical section on the line GG looking Fig. 35. sectional view of a portion of a gum applying roller showing the rubber inserted in the same. I

Referring to Fig. 1, l is the main supporting table 'on which the principal elements of the machine are mounted. 2 is a bracket attached to the table and rising laterally therefrom at a suitable angle, on which bracket the loop hopper 7 to be described in detail later on, is mounted. On the table 1 are also mounted standards 3 and 4 the former carrying the pulleys andloops are clutch mechanism for controlling the operation of the hopper, the latter standard carrying the thread spool from which,

thread is supplied to the sewing mechanism. Moreover on the table are mounted the needle bar standard 6' and the standard 8 which carries the arm 49 for operating the needle bar. 11 is the sewing table to which the loops are guided from the hopper by means of chute 10. The several devices are driven from two shafts as shown in Fig. 3, the main shaft '12 and the sub shaft 13, driven from the main shaft by miter gears 14.

The principal devices, through the cooperation of which the loops are fed from the bulk to the card and sewed thereon, are as follows: The card feeding device; the sewing device; the loop" feeder; the auxiliary feeder; the loop hopper, and'the pasting device; and I shallhereinafter describe these several devices"under these;

headings.

The card feeding deoz'ce.This device is shown in detail in Figs. 2 to 5 and it serves fonadvancing the cards, onto which the sewed, step by step; a stitch being made mechanism, whereby a loop is sewed onto the card. In the forward portion of sewing table 11 is mounted a shaft 15 which Fig. 38 is adetail' .two other under'feed rolls after each step by, the sewingv runs transversely to the table and which carries a ratchet Wheel 16 operated by feedingly pressed by means of spring 23 at-- tached to connecting bar 19. Cam disk 21 has two notches 24 into which cam roller 22 is alternately thrown by the spring pressure when disk 21 revolves and thereby connecting bar 19 is oscillated and rocking motion'imparted to rocker 18 which in turn causes pawl 17 to feed ratchet wheel 16 forward clockwise, step by step. Shaft15, Figs. 2 and 4, also carries gear wheel 25, which can be clearly right hand side of sewing table 11, which is in mesh with idler wheel 27 isv driven, this wheel being mounted, on shaft 27 which carriesinside of the table two underfeed rolls 35 with their peripheriesin line with the' u'per surface of sewing table 11. With these underfeeding rolls cooperate two upper feeding frolls 36 journaled in pivoted arms in Fig. 5. the upper feed rolls 26' from which gear gear wheels seen inFig. 2-=at the 37 as shown being yield angly held against lower feed rollsby means I with gear wheels 29 and 29 are mounted w h (not shown), which are-similar to those shown at 35 in Fig. 2 which coiiperate with upper feed rolls- '39 shownin Fig.3, Feed rolls 39 are tively driven by means of gear wheels 30 and 30 from gear-wheels 29 and 29', so that a card fed between the feeding rolls isgpositively moved forward from either side. Feed rolls 39 are yieldingly pressed toward the table similarl to the manner' in which.

feed rolls 36 previously described are pressed so that a description of this struc ture is unnecessary and will be clear from the illustration alone. Similar feed rolls 40 are mounted back of feed rolls 39, (Fig. 3) and positively driven by gear wheels 33 and posi- 33 through the intermediate gear'wheels' 31, 32 and 32- as will be obvious from Figs.

4 a'rid 5. By this feeding arrangement a positive forward feed, from-the left to the right in Fig. 4, of the card isob tained step y step as required by the sewing pro From shaft 15, Fig. .5, a. shaft 41, jour'na ledlg intoit as shown at 46 in Fig. 2 in which transversely above sewing table 11, is driven and on this shaft is mounted centrally above the'sewing table the so called pick up roll 42, shown in dotted lines in Fig. 5 and in 5 ,plan View in Fig. 3, the periphery of which mounted therein.

a similar card feeding mechanism are shown in Fig. 4, the pick up roll being journaled atfiS in this figure.

Sewing deoice.The sewing device is I principally mounted on standard 6 which carries needle bar vertically and slidingly This bar carries at its lower end two needles spaced apart the dis tance between two sewing eyes of a loop. Only one of the needles appears in the drawings, for'instance in Fig. 15, where the lower end of needle bar 4-5 is shown in larger scale, whereas the other needle is located behind the distance of the sewing eyes as usual in that class of machines. Standard 6 has an opening or shdeway cut needle bar block 1-7 is adapted to slide in yertical direction. Through the front end of this block passes needle bar 45 and is at tached thereto for instance by a screw l8 and to the rear end of this block is attached rocking lever d9 pivotally mounted on standard 8. Tothe other end of'lever 4-9 is pivotally attached connecting'rod which in turn is driven by crank 51 through an intermediate gear drive 52 from main shaft 12.

A plan view of the connection of rocking arm d9 to needle bar block 47 is also clearly shown in Fig. 6. Thus vertical oscillation is imparted to the needles from the main shaft'12 and the timing of the operation of the needle bar and of the card feed is so that after every step the card is advanced by the card feeding device, the needles make one stitch.

The looper device which is necessary to loop the thread carried through the cards by the needles is operated in similar manner as shown and described in the above named Rowbottom patent, where the looper is shown underneath the table'in Fig, -t* at litand 1%5, the shaft corresponding to shaft 14.5 in this figure of the Rowbo ttom patent being in the present application iishaft 53, Fig. 5, to which oscillating I110- I "tion is imparted through sector 54 driven 1 by connecting bar 55 from sub shaft 13 in similar manner as has been described with reference to connecting bar 19 which drives the card feeding mechanism previously de- -neath the feeder structure.

bar standard 6 is shown in detail and it will be noted that at this end a spring 56 is attached to the standard which presses against a hard 60 on table 11 close to the line where the needles 61 enter the card to prevent the card from beinglifted off the table when the needles arewithdrawn therefrom. A

T he loop feedcr.-This device which takes the loops from the lower end of loop chute 10 is shown in detail in Figs. 12 to 19 and its operating mechanism in Figs. 8 to 11. Its location in the machine can be clearly seen from Fig. 3. Referring first to the plan views of the feeder shown in Figs. 12, 13 and ll, the feeder is located in the central longitudinal line of the sewing table and slightly above the latter. The sewing table 11, a portion of which is shown in Figs. 12 and 13, is slightly recessed in its central portion 11 which forms the slideway for the cards and the frame structure Off the'feeder is slightly elevated above this slideway so that the cards can pass under- The distance at which this structure is located above the slidcway may be clearly seen from Figs. 15 and 16 where the bottom of the slideway 11 is marked. The feeder consists of a slide 65, Figs. 12 and 13, the rear end of which is slidingly supported by a bridge 66 extending across the feeding table 11, and the front end of the slide is supported in an L structure 67 attached to the lower end of chute 10 as will also clearly appear from Figs. 12 to 1%. Slide is operated by means of a rocking arm 68 pivotally attached to slide 65 through stud 69 with the necessary lost motion in the pivot joint. The operation of arm 68 will be described later on. For the present it may be stated that this arm is adapted to oscillate slide 65 on its ways longitudinally of the table a suitable'distance. On slide 65 is pivotally mounted as shown at 70, a rocker 71 which is clearly' illustrated in Figs. 15, 16, 18 and 19. This rocker consists of a frame which has two being suitnblv recessed transversely to re ceive the hump of a loop as shown at 74. A bottom view hf rocker 71 and the'feeder foot is clearly shown in Fig. 18. To the lower end of chute 10 is attached a leaf spring 75 which bears with its free end toward the needles (31 as shown for instance in Fig. 12, the width of the opening being equal to the length of a loop, and the bottom of the groove is at this point inclined toward the needles as shown in Figs. 15 and 16 at 77. When the feeder foot is fully retracted through the action of slide 65, its lower end rests on the bottom 77 of the chute so that its recessed portion 7* is in line with groove 76 of the chute on Whichline the loops glide onto portion 77 so that when foot 72 descends onto bottom 77 in the manner which will be presently described,it takes hold with its recessed portion 74 of a loop which has been delivered onto plate 77. lVhen the feeder-foot insueh position is then moved toward the needles by the action of slide 65,-it will be clearly seen that thereby the loop is removed from plate 77 from what will be hereinafter termed the feeding line, onto 1 what will. be hereinafter termed the sewing line on which the needles enter the cards.

The 'mechanism for operating slide 65 isdimensioned so that the throw of the slide is equal to the distance between the feeding line and sewing line. Rocker 71 with the feeder foot 72 on card 60 in the sewing line 3's shown in Fig. 16. To the'rear end of rocker 71 is attached atransverse abutment detent 78 which protrudes on one side beyond the lateral surface of therocker as shown in Figs. 12 and 13. Now it is necessary that the feeder foot 72 be removed from the loop when the needles enter the sewing sweet the loop because at this mo:

ment the needles attach the loop to the card and therefore it becomes unnecessary to further hold the loop to the card by any other means. move the feeder foot from the loop at the moment the-needles have entered the card, I provide abutment arm 79. on needle bar block 47. The manner in which this arm attached to thisblock is clearly'shown in Fig. 5. This arm extends rearwardly toward the rear-end of rocker 71 and also downward a suilicient distance so that when the needle bar has descended a sufiicient distance so that the needles have entered the card, the lower end of bar 79 abuts against abutment detent 78 of rocker 71. Fig. 16

line over Therefore, in order to ren m r i. g, is attached to wit .135

shows arm 79 in full lines at the moment it touches abutment 78 and in dotted lines in the position in which it is when the needles have reached their lowest point. When arm 7 9' is moved into dotted position it will be noted that roclger 71 is depressed thereby at its rear end so that foot 72 is lifted ofi the loop which it has up to this time hel onto the card and it will be also noted th this occurs against the tension of leaf spring 7 Now if by suitable timing the means for operating slide 65 retract the.

slide, abutment detent 78 glides along the rearwardly and upwardly incline lower end of. the arm 79 and thereby through the action of the spring 75 foot 72 is pressed down again, but by this time the slide 65 has been withdrawn suifi ciently so that when abutment detent 78 has been thus moved away from the control of bar 79 it permits the descent of foot 72,

and thereby the lower reoessedtgortion 74 I of the foot descends again on feeding a loop which has been delivered on plate 77 while the feeder foot was in its forward position to deliver a loop onto the sewing line. In the meantime the needles have been withdrawn from the card and on their upward niovementarm. 79. has been also lifted away from rocker 71 into the position shown in Fig. 15, so that when the slide moves foot 72 again forward onto the feeding line this foot remains under the control of spring75 and holds. the loop in sewing position until the needles take charge of it, whereby the operation of arm 79 previously described is repeated. In Fig. 12 the feeder foot 72 is 'shown in the position in which it has descended onto a loop delivered on to plate 77 and in Fig. 13 in the position iuwhich it holds a loop on the sewing line, and in Fig. 13 is also shown.

how, for instance by gravity, another loop has dropped from the groove of chute 10 onto the plate. into the position to be seized by the foot on its return to the feeding line. The manner in which slide 65 of the feeder foot is reciprocated is shown in Figs.

8 to 11- and Fig. 17. Rcckirigarm 68 which, as previously stated, is pivotally attached at one end to slide 65, is pivoted intermedi-, .ate .its two ends on sewin shown at 126. The other, s orter end, is pivotally attached at 129 to the oilset arm 127 of-slid ing block 128 which is spring actuated as shown. in Fig. 17 at 131 and mounteil oil ing' table 11. l-iding block 128 is provided tion and at the end of this-arm is mounted a contactroller 133. This roller coo crates with an Man 132 ofi'set inthe-opposite directable 11, as

a glatform adjacent to sew- 1 with feed wheel 134, a portion of w ich shown in Fig, 17 and a side view is shown in Fig. 8. Thisfeed wheel, as will be seen suitoperates with a cam ably journaled in an upright frame 136 fastened on the main table 1 and this wheel is provided with a suitable number of notches 137 so that through the action of spring 131 of sliding block 128 contact roller 133 falls into these notches 137 when wheel 134 is rotated, and by thus gliding from one notch to the other, oscillating motion is imparted to sliding block 128'which in turn is communicated by the means previously described, to rockingarm 68, which operates slide and it will he noted that by passing from one notch into the subsequent notch, roll 133 performs one cycle of operations which corresponds to a retraction of the feeder foot from the sewing line onto the feeding line and pushing it forward onto the sewing line. Feed wheel 134 is operated by means of gear wheels 138, 139 and 140, the latter gear wheel being mounted on a stud together with ratchet wheel 141, the

stud which supports wheels 140 and 141 being shown at 142 in Fig. 8. On stud 142 is also pivotally mounted feeding rocker 143 which carries at its upper end spring pressed pawl 144 cooperating with ratchet -wheel 141 and pivoted at 145 while the lower end of feeding rocker 143 is pivotally attached at 146 to connecting bar 147. The latter bar is forked at its other end and coroove 148 of a cam 149 which is mounte on sub shaft 13 as shownin Fig. 3. Adjacent to cam 149 connecting bar 147 carries a cam roller 150 which coiiperateswith the surface of cam 149 so that thereby oscillating motion is imparted to bar 147 which in turn rocks feeding rocker 143 by which ratchet wheel 141 is fed clockwise and through the intermediate gears feed wheel 134 is thus also fed clockwise- In girder to prevent overthrow.- ing of feed wheel 134 so that contact roller 133 is sure to descend into the subsequent notch, a spring'pressed retaining block 151 is provided which is suitably shaped to descend into a notch 137 at the moment contact roller 133 rides over an elevated portion of feed wheel 134, so that any speed which feed wheel 134 might attain, while contact roller 133 .is in elevated position, and thus offers no resistance to the feed wheel, will be checked effectually by retaining block 151, which is at this moment located in a notch. Connecting bar 147 is spring pressed as shown at 152 so that its cam roll 150 always remains in contact with cam 149. To further prevent any overfeed of feed wheel 134 I have provided a brake which is illustrated in Figs. 8 and 9. From Fig. it will be noted that gear wheel 138 which is mounted on the same shaft 135 with feed wheel 134 has an enlarged hub extending toward the bearing of the shaft and on this hub rests a brake shoe 153 of suitable material for instance hard fiber or the 10 which represents a horizontal section on the line D-D in'Fig. 8 through the feed rocker 143 in larger scale. From this figure it will be seen that rocker 143 is provided with a horizontal slot 155 in which pivot stud 145 is disposed so that it can slide horizontally and it may be adjusted horizontally by means of adjusting screws 156 which protrude from opposite ends into slot 155.

ltwill be remembered from the description of the operation of thecard feed and also from the operation of the needle bar that these two latter devices are timed to have the same number of cycles per unit of time so that for instance after every feeding step of the card the needles descend ihto the card and make each one stitch. Therefore, for each descent of the needles and also for each forward step of the card a new 100p must be supplied by the loop feeder. The operation of feeding wheel 134 is such that at each step which pawl 144 feeds ratchet wheel 141 forward contact roll 131 performs one half a cycle of operation; in other words at the first step it rolls up onto the high portion of feed wheel 134, at the next step it descends into the subsequent notch. However, these two sub-steps together comprise one feeding step of the loop feed, as previously described. Cam 149 being mounted on the same sub-shaft 13 on which cam 21 which operates the card feeding mechanism is mounted and the latter cam by lneans of its two notches 24 causing the card feeding mechanism to feed the card forward two steps at eachrevolution, cam 149 is accordingly provided with four notches 157 so that at each revolution of subshaft 13 the loop feed performs two complete'cycles or feeding stepsin order to de-- liver for each card step forward,-one loop onto the card. The machine herein described is intended to sew 24 loops in a row onto a card and therefore the feed wheel must make 24 steps in order to o erate the loop feeder 24 times to deliver 0 e desired number of loops onto the card. However be clearly seen from Fig. 8 and which covers 4 notches of this wheel. Feed wheel 134 is accordingly provided with 24 operative as be prevail" 45 fee er.

- loop, I find it advisable to 50. tive means near the end of t e chute w ich rflotches and"! notches which areqrendered inoperativebyrib 80. Thus when the con tact roll 133, passes I over the operative notches 137 the feedili period in which the contact roll p over rib 80 it. is prevented from fa I these notches; and thus the feeding mechaniam is arrested. During this period two 10 closing stitches are made in the completed card and two stitches in the subsequent. yard. During this-idle period of the feedmechanism, during which contact roll fi remains on rib 80--it remains thus on the elevated portion of feed wheel 134 and thus feedeffoo't 72 remains retracted on plate .77 whereby {it closes the end of the loop chute'and' 'revents the discharge of loops from the c ute. -While through rib kmv 2o feed wheeel 134 contact roll 133 is M, vented from'falli'ngi into notches 137 c1fi,v-'

ered by it retainin lock- 151 which'alsoeooperatwwithinotc es 137, as previousl d'e-j scribedstogreventzoverfeedin shoul not notches 'e'ei dthereby-z For this reason block 151,- i;face view-of which'is shown in Fig. 11, is provided with a recessed portion 81- of suflicientiidth and de thso as to RO' aYOidjrib' gqandnpermit the lock to fall also-into the notches'137 covered This recessed portion 81 is also in icated in dotted lines in. Fig.- 8. v

- 'Theauwilia feeder.The p; chute 10 35 which, as-hasqee 11' above explained in con nection with the loop feeder has a central groove which permits the sliding of loops own from the hopper to the loop feeder, guides the loops merely. and they descend '40 through the greater portion of the chute by exerts a ushiiig action upon the last few loops which are located in the end of the chute, say for instance on thelast loops, whereby the last loop is positive forced 65 out of the end of the chute onto t edelive plate 7 7 at the ihoment the feeder foot ho ds thepreviouslynseized loop on the sewit? line in sewin position, The location 0 the auxiliary eeder in the machine is '60 shown in Fig. 2 at where it will'be seen that it is slightly above the; oint the chute curves from the inc 'ned to the horizontal direction near thesewili table. The detail construction'of ""ffliii i'u iii-y feeder is clearly shown in mechanismcon times feeding loops w areas during the 'j'ointly controlled into.

pre-

, front end of the by rib 80 from fa 'ng into the 'end of the rib.

6, 21 and .22. This lifter has an L shaped portion 172 at its, lower end and it is in line returned onto chute 10 Figs. 20 a feederjs operated i em the-needle bar block in'similar manner as the l op feederv previously described, so that the 'supply of -oo' from each feeder is ythe, operation of may sewing needles;

The construction; of the auxilia feeder is as follows The" lower end-of e 'ute, 10, Fig. 21, is su ortea byrb ockl tim than rests above the sewing'table 1; suite; lie-height to rmit the pa'seagejof a clrdgbetween th tab e andtheower ma-ef-thezehuwas scribed; slightlyzabbva block-161i: 1p otally amp d-mane chm eireckei shown wliii ava :runnmgf'para f teht afi vertical alinement' igaln ve serves as a slide'wa for-pn'sliei' wt 's usher -'ia shown,inetail "ms 1E1 24 It wi *bei-notedlfromthis figur'eqah 'ra-ls from Figs. '20 to 23.,that: it is provided with. alateral detent166which rotrudesat one); side through aslot' in roc usher has a downwar pointing finger 16 Pusher issprin controlled by means of spring 168 fastenc to the lower end of rocker 162 to the rear usher 165 so that it tends tothrow the pus er forward and out of rocker 162. The rocker is provided with a lateral pin 5 169, Fig. 28, to which is attached a s ring 170, the other end of which isfixed to lock 161, Fig. 21. This latter spring tends to pull e forward end of the rocker onto the chute 1; so that the tip of finger 167 enters the loo groove of chute 10 between the two gui e plates 57,- as shown in Fig. 23. To needle bar block 47 is attached a lifter 171, Figsifi,

with detcnt 166 so that the L shaped portion of the lifter is located beneath but in line with detent 166. Thus when the needle bar rises L portion 172 abuts against detent 166 and tilts rocker 16 2 upward and also re-i 11o tracts .finger 167 against" the tension of spring 168 inthe following manner Spring 168 is stronger than spring 170 sothat when hook'171' moves upward L shaped cam 172 by abutting against detent 166 first tilt.

rocker 162 because spring 170 yields Y the return movement of neeeiejtar f 171 descends and thereb rocker1l$2rs I s ausainjret tc V,

position detent 166 Elt1 ri ht against the outer on oil. shin 1 under-thetensionof spring 1 0,- 4? re relatively to the forward; mom detent 166 the one 172 dorms ward incline whichiofle'rez cones a p menace where the finger 167 is shown in its extreme forward position it will be seen that it rests behind the hump 174 of a loop in the chute. Now if bythe compound action 3' ust described, the finger is first lifted oif the loops, then retracted, and then descends onto the chute it will descend behind the hum 174; of the subsequent loop. In Fig. 21 .ger 167 is shown about to descend into the chute behind the hump of the subsequent loop. Then by the last step of the compound movement of the finger this loop is thrown forward in e the chute which will cause the loop which is located in the extremeend of chute to be pushed onto receiving plate 7 7, Fig. 12. Inasmuch as this last operation of the finger occurs during the desoent of the needle bars 'at which time feeder foot 72 is forward of plate 77 on the sewing line, this plate 77 is free to receive a loop thus pushed out of the chute by the auxiliary feeder.

Vi ith reference to the operation of the feeder foot shown for instance in Figs. and 16, a means has been described and shown in Fig. 8 in the form of rib 80 by which the operation of the feeder foot is interrupted during four successive stitches of the sewing needles for the reasons stated and it has also been stated that during this idle period the feeder foot remains in retracted position in which it is in line with the terminal of the loop chute so that no loops can slide out of the chute onto plate 77. It will be noted from the illustration and description of the auxiliary feeder shown in Figs. to 24,

that no means are shown by which the operover the hump of a loop which happens to be in line with it and which the finger tends to push forward if the end of the loop chute is closed by the feeder foot during its idle period.

Loop h0ppe-2'.This element of themachiue serves for supplying loops from the bull: singly into chute, 10 in'predetermined position, so that they can slide in the groove.

this device is shown in Figs. 25 to 32 and a detail construction of a modification of certain portions of the hopper in Figs. 83 and 34. The hopper consists of a stationary base plate 95, Fig. 31, ,which is attached to bracket .2 by means of stud 96. Rotatablymounted on stud 96 is the loop container which consists of cylindricalportion 97 open at the top to which a bottom piece 98 is attached as for instance by screws .99, shown at the upper end of Fig. 31. Base plate is shown in plan view in Fig. so and it will be noted that it has an elevated outer rim por-- tion .100 within which the hopper cylinder 97 is seated as shown in cross section in Fi 31. This rim 100 extends only part way around the periphery of the base plate, the portion of the periphery between the points 2, 72 being flush with the lower edge of the rotatable cylinder 97 as shown in Fig. 27. Moreover the periphery portion between the points at and p is beveled inwardly in the manner shown in Fig. 27 at 0. The purpose of this beveled portion will be explained later on. The outer portion of the base plate between the points 3) and n is level. The underside of the hopper cylinder which faces base'plat-e 95 is provided with grooves 102 of the cross section shown in Fig. 30.

which grooves run substantially tangentially to the inner periphery of cylinder 97 as ice shown in Figs. 28 and 29, which both repre- I sent views of the underside of cylinder 97 The cross section illustrated in Fig. 30'is taken on the line HH, Fig. 29. However, grooves 102 do not terminate directly in the inner periphery of cylinder 97 but the pcriphery is notched out adjacent to such places,

where a groove 102 terminates as shown at 103. A view from the inside of cylinder 97 showing'these notched portions 103 in fullilO view is illustrated in Fig. 32. The purpose ofthese notched portions 103 is to have a scooping action on the bulk of loops contained in the cylinder when the latter rotates and the depth of such notches in the direction of rooves 102 is such that not more than two loops in line with each other may be contained in a groove 102 as shownfor instance in Fig. 29. As will be seen from Fig. 30 the shape of grooves 102 is such that the loops can pass from within cylinder 97 outwardly through these grooves only? in one position, which is with theif'convex or hump portion upwardly (the groove 102 is shown upside down in Fig.' 80 to correspondwith the views shown in Figs. 28 and 29). Rim 100 of base plate 95 within which cylinder 97 rotates is of such height that no loops which, may have slid, into grooves 112 can escape outwardly from; the hopper except 

